@awayfl/awayfl-player/lib/Box2Dold_Raycast/Collision/b2Manifold.ts

Flash Player emulator for executing SWF files (published for FP versions 6 and up) in javascript

/*
* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
*
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/

import { b2Settings } from '../Common/b2Settings';
import { b2ManifoldPoint } from './b2ManifoldPoint';
import { b2Vec2 } from '../Common/Math';

// A manifold for two touching convex shapes.
export class b2Manifold {
	readonly __fast__ = true;

	constructor() {
		this.points = new Array(b2Settings.b2_maxManifoldPoints);
		for (let i: number /** int */ = 0; i < b2Settings.b2_maxManifoldPoints; i++) {
			this.points[i] = new b2ManifoldPoint();
		}
		this.normal = new b2Vec2();
	}

	public Reset(): void {
		for (let i: number /** int */ = 0; i < b2Settings.b2_maxManifoldPoints; i++) {
			(this.points[i] as b2ManifoldPoint).Reset();
		}
		this.normal.SetZero();
		this.pointCount = 0;
	}

	public Set(m: b2Manifold): void {
		this.pointCount = m.pointCount;
		for (let i: number /** int */ = 0; i < b2Settings.b2_maxManifoldPoints; i++) {
			(this.points[i] as b2ManifoldPoint).Set(m.points[i]);
		}
		this.normal.SetV(m.normal);
	}

	public points: b2ManifoldPoint[];	///< the points of contact
	public normal: b2Vec2;	///< the shared unit normal vector
	public pointCount: number /** int */ = 0;	///< the number of manifold points
}